Mixing machine



B. H. GERARD MIXING MACHINE.

APPLICATION FILED MAY 25, 1921.

R. H. GERARD.

WXING MACHANE. APPLICATION FiLED JIEAY 25, 1921- Patented. June. 6, 1922 .2 4%, .L m w rgl 2 SHEETSSHEET 2;

5] mum/m Rov- H. G ERARD I4 is 5358mm Tar arena rat-ice.

nor a. GERARD, or nn'rnorr. MICHIGAN, Assrenoa TO mosean & WRIGHT, A coaronA'rIon or MICHIGAN.

MIXING- MACHINE.

1 arenas.

Specification of Letters Patent.

Patented June 6, 1922.

' Application filed. May 25, 1921. Serial No. 472,383.

To all whom. it may concern:

Be it known that I, ROY H. GERARD, a

citizen of the United States, residing at useful Improvements in Mixing Machines,

of which the following is a full, clear, and exact description.

This invention relates to machines for mixing and homogenizing compounds. of rubber prehminary to their incorporation in various articles.

the mouth of the container.

, An object of the invention is to provide a compact, simple and durable'machine of the type mentioned, capable of rendering rubber manufacturers satisfactory service.

, The construction comprises a container in which revolve agitators. provided with an upwardly open month which is adapted to be closed by a combined cover and hopper, the latter being hinged for movement about an axis in proximity to One of the side walls of the container is hinged for movement to one side in order to permit discharge of a prepared batch.

The. invention is illustrated in the accompanying drawings in which Fig. 1 is a sectional side elevation of a preferred embodiment of the Invention, and

Fig. 2 is a plan view of the same partly in section.

' In the drawings a container is indicated at 1 and has a partitioning rib 2 dividing it into communicatingsubstantially cylindrical chambers in each of which revolves an agitator 3 of the hollow construction disclosed. These agitators may be of any suitable shapeor curvature longitudinally as disclosed in any of the patentsot the prior art such, for instance, as Mosher No. 1,371- 046. March 8th, 1921., The container 1 is provided with hollow walls as indicated at 4. The hollow construction of the agitators and of the walls of the container permit governing their temperatures by circulating water or steam. Ordinarily water is employed to keep down the temperature developed in use.

The container 1 has its end walls closed. It is stationary on supporting legs or frames 5 which are anchored to a bed plate 6. One of the side walls of the container is preferably sectioned or severed from the main body of the container as indicated at 7, the

The container is section being hinged. preferably adjacent the mouth 8 of the container as indicated at 9, a little more than counter-balanced by a Weight 10. To ears" 11 at opposite sides of the section 7 arepivoted, levers 12 which intern'lediate their ends are loosely hinged to a rod 13. Links 14 fixedly secure the rod 13 to a second and parallel rod 15 whose opposite ends, as indicated at 16, project free. The projecting ends 16 are adapted to seat in notches 17 located at the bottom of the curvedand nearly vertical edges 18 of the extended end walls of the container. The levers 12 and links 14 together constitute a toggle mechanism for locking the movable'section 7 in closed working position." By upward pull of the levers 12, the toggle may be broken and the hinged section 7 moved to the dotted line position in dicated in Fig. 1.

The mouth 8 of the container 1 may be closed in any suitable manner but preferably, as shown, by a combined cover and hopper indicated generally by the numeral 19. It is provided with rearwardly convergent plates 20 which are fulcrumed on a stationary pin 21;that is fixed relative the container. And further rearwardly, the extensions 20 are loosely pinned as indicated at 22 to a sleeve 23 which is loosely but yieldably connected by the springs 24 to the plunger 25 of a fluid pressure cylinder 26. This latter is pivotally anchored as indicated at 27 between the legs 5 of the frame.

In operation, a batch of the ingredients to be mixed is charged through the hopper into the container and after it is blended into a homogeneous mass, which can ordinarilybe done in a few minutes time, the

section 7 of the. side ,wall is unlatched and swung open by suitable operation. of the toggle mechanism 12. etc. This latter may be done without stopping operation of the agitators 3. Preferably, a roller tread equipped convey/(n28 is arranged to carry a bucket 29 to a -'oo sition for receiving the discharged batch.

The machine above described in detail is extremely durable and compact in its construction. Its overall height need not be more than twice the width of the container in cross section. The parts of the machine are few in number and the machine requires no specially skilled labor, and no time is lost in its use in tilting the container to discharge the prepared hatch as in prior machines of this type.

Haring thus described my invention, what 1 claim and desire to protect by Letters Patent is:

1. A mixing machine having a stationary container with internal working chamber, agitating means movable within said chamher. said container being provided with a mouth, a combined cover and hopper for seating" in said mouth and substantially closimg the container, said combined cover and hopper being i nlcrumed adjacent the mouth of said container, and means for moving the combined cover and hopper about its fulcrum.

.5. A. mixing machine having a stationary container with internal working chamber, agitating means movable within said chain her, said container being provided with a mouth. a combined cover and hopper for seating: in said mouth and substantially closing the container. and a pivoted fluid pres sure device for moving the combined cover and hopper about its fulcrum 3. In a mixing machine, a. container having an upwardly open moutln a combined cover and hopper for-filling; the mouth openinn and closing the container, agitating means within the conta.iner,- said container having a hinged section in one of its side unseen to he opened to discharge the contents of the mixer without stopping movement of the agitators.

4:. A mixing machine havinga container provided with a month in its upper portion, an agitating means revolvahle therewithin, in combination with a combined cover and hopper, said. cover and hopper being in one piece and having" a rearvardly extending port-ion fulcrumed in proximity to and at suhstantially the same elevation I the mouth of the container, and a fluid pressure cylinder loosely connected to the combined cover and hopper on the side of its fulcrum opposite the mouth of the container.

5. A mixing machine having a. container provided with an upwardly open mouth,

agitating means revolvahle within the container. said container having a portion of one of its i'ails hinged adjacent its mouth. and means located adjacent the bottom of the container for locking the movable portion in closed" position, said means includ ing: a toggle mechanism, and a stationary catch tor one of the members of the toggle.

Signed at Detroit, ltliichigen, this 14th day of May 1921,

ROY H. GERARD. 

